Method of weatherproofing shingles or like articles



May 5, 1936. M. L. cA'roN METHOD F WEATHERPROOFING SHNGLES 0R LIKE ARTICLES 8 Sheets-Sheet 1 v Original Filed Dec. 12, 1929 INVENTOR Maur/ce L. C'an BY Y E ATTORNEY May 5, 1936. 1M,V CAT'oN n 2,039,776

mamon or"` wnnmriooFme sHINGLEs on LIKE nucl-.Es

rigil Filed Dec. 12, 1929 .a sheets-sheen? ATTORNEY May's) M. L. CATON METHOD OF VTHERPROOFING vSHINGLES OR LIKE AR'IICLS- Original Filed Dec. 12, 1929 8 Sheets-Sheet 5 INVENTOR ATTORNEY MN5, 1936-' M. 1 cA-roN M 2,039,776

METHOD 0F WEATHERPROOF-ING SHINGLES 0R LIKE .ARTICLES Original `Filed Dec. -12', 1929 8 Sheets-Sheet 4 INVENTOR l NaureL afan Bw ATTORNEY May 5, m36. M. l.. cAToN 2,939,776

yMETHOD oF WEATHERPROOFING sHINGLEs 0R LIKE ARTIQLES l Original Filed Dec. l2, 1929 B Sheets-Shet 5 ATTORNEY May. 5, 1936.

M. L. CATON METHODF WEATHE'RPROOFING SHINGLES OR LIKE .ARTICLES originaLFiled Dee. 12.

s sheets-sheet sv INVENTOR Maurz'CeL. Cafon ATTORNEYI May 5, 19%. M L, CATON 2,039,176 METHOD oF WEATHERPROOFING sHINGLEs 0R LIKE ARTICLES original Filed Dec. 12, 1929 8 sheets-seet 7 OOOOOO OO'OOOOOOO -loo INVENTOR Molurce L CQ Ibn METHOD OFWEATHERPOFING SHINGLES OR LIKE .ARTICLES Original Filed Dec. 12, 179-29 8 Sheets-Sheet 8 INVENTOR Maurice L. Cdfk- A- rToRNEY Patented May 5, 1936 I UNITED STATES PATENT OFFICE METHOD oF wEArnEaPaoor-TNG snm;

' GLEs on LIKE ARTICLES Maurice L. Caton, White Plains, N. Y., assigner to The Patent and Licensing Corporation, New York, N. Y., a corporation of Massachusetts s'claims. (ol. sns-ss) The invention relates to the treating of shingles, and more particularly it relates to improved methods of weather-prooiing shingles, or like articles, the present applicationbeing a division of my prior application Serial No. 413,668 filed December 12, 1929.

The invention contemplates the feeding of untreated shingles into one end of the machine, the shingles being carried by the machine at a constant rate of speed and discharged from the machine completely weather-proofed as a result of being subjected to a plurality of processes applied both manually and automatically While the shingles are traveling through the machine.

In the weather-proong of shingles as `heretofore-practiced, it has been found necessary 'for the operator or operators to handle the shingles at certain stages of the treatment and upon completion of the treatment to place the shingles in a drying rack, where they must remain for a considerable time before being arranged in bundles,

the drying process being necessary to prevent the individual shingles from sticking together when arranged in bales.' 1 l An object of the invention is to provide an improved method of weather-proong shingles or similar articles in which there is no intermediate manual manipulation of the shingles.

Another object is the provision of a shingle treating machine operable to practice a method whereby individual shingles are fed into the machine and subjected to a treatment comprising a plurality of steps, upon completion of which, the shingles are discharged from the machine in condition to be immediately assembled and baled.

A still further object of the invention is the provision of a method in which the desired steps ofweather-proong shingles are simplied, and upon the completion of the treatment the surfaces of the shingles are suiiiciently non-cohesive to permit the shingles to be arranged in bales under pressure without sticking together.

In the drawings, wherein like reference charac ters indicate like or corresponding parts,

Fig. 1 is a general plan view of an improved machine showing dlagrammatically the devices of my invention, the machine being suitable for practicing my improved method of treating shingies; v

Figs. 2 and 3 together showa side elevational view on a larger scale of the machine;

Fig. 4 is a sectional view drawn to a larger scale, along the line 4-4 of Fig. 1;

Fig. 5 is a sectional view, drawn to a larger scale, along the line 5-5 of Fig. 1;

Fig. 6 is a sectional view, drawn to a larger scale, along the line 6-6 of Fig. 4;

Fig. '7 is a sectional view along the line 1-1 of Fig. 6;

Fig. 8 is a fragmentary sectional view, drawn to 5 a larger scale, of a portion of the device shown in Fig. 4;

Fig. 9 is a large scale fragmentary sectional view f along the line 9-9 of Fig. 6;

Fig. 10 is a view along the line Ill-I0 of Fig. 9; 1(

Fig. 1l is a view along the line l l-l I of Fig. 10; Fig. 12 isa view along the line l2-I2 of Fig. 4; Fig. 13 is a sectional view along the line I3--I3 of Fig. 12;

Fig. 14 is a View along the line Il--II of Fig. 1, 1:

' of Fig. 5;

Fig. 17 is a sectional view along the line Il-Il of Fig. 16; and

Fig. 18 is a detail view o! a portion of the supporting rail.

Referring now more particularly to the draw- 2` ings, the numeral 2l) designates an endless chain conveyor traveling in a horizontal plane. The conveyor 2llfextends the full length of the machine and is carried by a driven sprocket wheel 2l positioned at one end and an idler sprocket 3 Wheel 22 at the other end of the machine.

The chain conveyor is operatively connected with a motor 23 by means of a pulley 24 and a power transmission system 25. The power transmissionsystem designated generally by the nu- 3 meral 25 is shown diagrammatically as comprising a plurality of operatively connected shafts. pulleys and belts arranged to step down 4the speed of the motorv 23. No designating numerals are applied to the individual shafts, pulleys and belts 4 comprising the system 25, inasmuch as the system, as shown, is merely a diagrammatical representation of any suitable step down power transmission system, and applicant is not claiming invention in the transmission system, as such. 4

The transmission system 25 transmits motion to another transmission system designated generally by the numeral 25a, which in turn actuates a shaft 26 and a belt 25h which travels arolmd a pulley 34 (Fig. 4) mounted on one end of a shaft 30. The shaft 26 actuates, by means of bevel gearsV 21 and 28, and a vertical shaft 29, on which the driven sprocket wheel 2l is mounted. The shaft rotates a pulley- 3l" operable to actuate a carrier belt 33. A

A frame-work 35, comprising a plurality of `vertical members 31 and 33, longitudinally extending members 36, and transversely extending members 33 provides a support for a back and for various other members comprising the machine. 'I'he vertical members 31 are shown in Fig. 1 as also serving as building posts or supports. It is obvious that the device may be assembled independently of such posts andthat the construction of the frame-work 35 may be varied to suit the particular installation.

The carrier belt 33v and the chain conveyor 20 are kept continually oving when the 'machine is in operation.v The chain conveyor 20 actuates a plurality of closely positioned carriages designated generally by the numeral 40,` extending entirely Iaround the conveyor 20 on@ a T rail 56. Each of the carriages'40 is preferably of a capacity to receive a plurality of shingles l 00.

The shingles to be treated are placed upon turn tables |05 within reach of an operator who stands on the other side of the belt 33 and places individual shingles on the belt so as to be advanced edgewise. At one end the belt'33 engages an idler pulley 32 carried in a member 43. The other end of the belt marks the location of va loading station hereinafter designated by the' numeral i3, where a second operator is positioned to 'manually feed the advancing shingles `from the belt 33 into the carriages 40 asl they move by in horizontal position. The thin end of the shingles is-fed into and clamped `by the `carriages 40 with the shingles projecting laterally from the carriages. The shingles are thereby conveyed edgewise from the loading station I3 by the carriages in a substantially horizontal plane for approximately the full length of the machine. Before the carriages 40 arrive at the idler sprocket wheel 22 they are caused to rotate from horizontal to a vertical position.- The carriages 40, and the shingle |00 clamped therein 1retain this vertical position as the chain conveyor 20 moves around the idler sprocket 22 and back on the opposite side of the machine until they approach an unloading station |5| positioned substantially opposite the loading station I9. The carriages 40 are rotated so as to bring the shinglesl |00 into substantially horizontal position before arriving at the unloading station |5| (Fig. 1). 'I'he carriages 40 are again caused to swing down into vertical position upon leaving the unloading station and retain this posi- A,tion while passing the driving sprocket wheel 2|. i As the empty carriages 40 again approach theA loading station I3 they are caused to swing upwardly into horizontal position in a manner hereinafter more particularly described.

shingle is treated while the shingles are being advanced in vertical position.

v 'I'he driving sprocket wheel 2| is carriedbyan end pedestal and tracksupport constructedA of a plurality of structural memberagenerally des` lgnated vbyv the nmeral 4|.; The idler sprocket l wheel 22, positioned at the other'end of the machine, is carried by a pedestal V42, similar in con.- struction. to the lpedestal 4|. The pedestal 42 is provided with a thrust screw 41 to regulate the tension in the chain conveyor 20.-

'Ihe carriages 40 move on a track positioned underneath the chain conveyor 20, the track preferably being positioned at approximately three feet from the floor. The chain conveyor 20 comprises a plurality of links 3|, from which iingers 45 are suspended at predetermined spacings. The fingers 45 are arranged in pairs, each pair operatively engaging a carriage 40, as best shown in Figs. 6, 12 and 13. i

The track, on which the carriages 40 travel, is preferably constructed of sections of a T rail 53. The T rail` 56 has its stem vertical for that portion of the track where the carriages 40 are in position to carry the shingles horizontally, as shown in Figs. 4, 5, 7, 8, and 13. The T 56 has its stem horizontal for that portion of the track where the carriages 40 are suspended from the conveyor 20 in vertical position, as shown in Fig. 5. Between these vertical and horizontal positions the T rails 56 are twisted through an angle of 90 degrees, thereby providing a warped track on which the carriages 40 movefromthe horimembers 36 by any desired means, the weight of the track and the load carried thereby being thus transmitted to 'the frame-work support 35, of

which the members 36 form a part.

f The carriage 40 comprises a pair of frames 53 on each of which is mounted a trolley. wheel. 53. so positioned as to engage one ange of the T rail'56. Guard rollers 60 are mounted on the frames 53 opposite to the trolley wheel 53 in position to engage the flange of the T rail 53. The

trolley wheel 53 is rotatably mounted on a knuckle.

joint 6| and the guard rollers 60 are similarly mounted on stud bolts 62, as best shown in Fig. 8. It 'is to be noted that the ngers 45, projecting downwardly from the chain conveyor 20, engage the outer edges of the frames 53. 'I'heframes 53 each have a riveted connection with a tie plate 30. A transversely extending main frame 63 is -simnariy riveted to/the mid portion of the plate so in such a way as to be substantially horizontal when the stem of the T rail 56 is vertical. The frame 63 acts as a vertical hanger from which the main portion of the carriage 40 is suspended when the stem of the T rail 56 is horizontal.. The

outer projecting end of the frame 63 carries an j underlying roller 65, which travels on a rectangular rail 63 when the frame 63 is horizontal. The rail 63 is provided only for that portion of the track wherein the carriage 40 is advanced in horizontal position. The rails 56 and 63 are posi- I tioned at some distance apart and thereby provide a rigid track for the carriage 40 as it travels in its horizontal loaded position. A thrust roller 11 is mounted on the pedestal 50 in a position to assist in carrying thel weight of the finger 12 and the shingles |00. An .adjustment screw 131s provided forv varying .the distance of the roller 11 from theT rail 56.

- The clampingbase'14 is fastened 'to theouterA extremity ofthe frame 63 -by a plurality of rivets 52.' A pluralityjof'grip fingers 12 are positioned in end to end relation immediately above the clamping base 14. Each of the carriages 40 is vshown as having ten of the fingers 12, but any other desired number may be used. 'I'he ngers 12 are not attached to the clamping base 14, but each has a pivoted connection 15 with a spring barv 1|. The other end of the spring bars 1| is so connected with the main frame 637 as to permit the fingers 12 to move-into and out of clampv -ing relation with the base -14. For this purpose a member 10 is provided having a pivotal connection 61 with the frame 63. The member 10 has a projecting lip 16, on the under side of which is mounted a spring bar'supporting member 88 extending the full length of the carriage 40. The spring bars 1| are fastened to the under side of the member 88 by a plurality of rivets or bolts 83. Rotation of the member 10 about its pivot 61 will similarly rotate, or tend to rotate, the spring bars 1| and the fingers 12 pivotally mounted on the other end thereof. A trip finger 69 is also pivotally mounted on the main frame 63 by a pin 64. The trip finger 69 is normally locked in engagement with the member 10 by means of cooperating projections 96 and `91 formed on the finger 69 and the member 10, respectively. The contact faces of the projections 96 and 91 are slightly inclined, as best shown in Figs. 7 andY 13, so that the projection 91 normally holds the nger 69 in locking engagement with the projection 96 in the member 10. As the carriages 40 swing from horizontal position to vertical position and vice Versa, in traveling from the loading station to the unloading station,the fingers 69 are held in the full line position relative to the members 10, as`

shown in Figs. 5 and 13. In this position of the member 10 the fingers 12 are in clamping relation to the base 14 so that shingles positioned between the fingers and the base are firmly clamped therebetween. v

As the carriages 40 approach the unloading station they are rotated from vertical to horizontal position by reason of the trolley wheel 59 and guard rollers following the twisted portion of the T rail 56, as already described. The carriages y 40 having moved into horizontal position adjacent the unloading station |5 I .are brought into operative engagement with a stationary cam 93 as best shown in Fig. 12. The cam 93 separates the finger 69 and the member 10 sufficiently to release the finger from engagement with the member and to permit the finger to take the dotted line position shown in Fig. 13. The stationary cam 93 has a vertical cam face 94 which wedges between the roller 82, mounted on the upper end of the mem-A ber 10, and the upper-end of the nger 69. The

'cam face 94 engages the roller 82, and the opposite face 95 of the cam 93 has a substantial inclination operating to disengage the finger 69 from the member 10. As the carriage 40 moves past the cam member 93 the member 10 is permitted to tilt slightly towards the T rail 56 and thereby release the fingers 12 from clamping engagement with the thin edge of the shingles |00. In order that shingles may be held firmly in position between the fingers 12 and the base 14, each of the fingers is provided with a pair of plates 19. The plates 19 are mounted on the under face of the ngers 12, and have their projecting edges serrated. The serrated edges of the plates 19 permit the fingers 12 to take a firm grip on the shingles when the trip finger 69 is in operative engagement with the member 10. As the ngers 12 are released by the throwof the trip finger 69 to its spaced apart relation to the base 14.

The operator at the loading station I9 feeds shingles from the carrier belt 93 between the fingers 12 and the base 14. Immediately after the feeding of the shingles into the carriage 40 at the loading station I9, the trip finger 69 isV again brought into operative engagement with the member 10, thereby clamping the shingles in place between the ngers 12 and the base 14. l

vThe operative engagement of the trip iinger 69 with the member 10 is accomplished by providing a cam support 81, mounted on the stem of the T rail 56 adjacent the loading station. A cam plate 86 is fastened on the support 81 in any suitable manner, as best shown in Figs. 6 and 7. The cam plate 86 is positioned in the path of the inclinednger 69 and moves the nger to the dotted line position shown in Fig. 7.,-,A Oppositely positioned pedestals 50 and 5I are-provided adjacent the loading station and unloading station, respe'ctively, as best shown in Fig. 4. The pedestals 50 and 5I have angle iron supporting members 48 and 49, respectively, fastened to the top thereof. The supporting. members 46 and 49 are both turned baci; upon themselves in the form of a horizontally extending U. The upper leg of the member 48 provides a mounting for a hinged cam 85, so positioned as to elevate the advancing trip finger 69 from the dotted line position of Fig. '1 to the full line position of Fig. 6 as the carriage 40 advances.

An angle iron 98 is fastened to the member 48 by means of bolts 99. A spring steel clip 84 has one end fastened in any suitable'manner upon the angle iron 98, the other end projecting downward; ly into contact with the free end of the hinged cam 85. A guide 8| is also mounted upon the angle iron 98. A bar |02, fastened on the top of the guide 8|, provides a mounting means for the hinged cam 85. 'I'he finger 69 passes between the hinge cam and the edge of the guide member 8| as it is moved to locking engagement with the member 10.L The lower portion of the guide member 8l is provided with a recess |03 having tapered side walls between which the guide roller 82 moves as the carriage 40 advances. The relative inclination and positions ofthe hinged cam 85 andthe guide 8| are such as to bring the cooperating projections 96 `and 9 1 into engagement as the finger 69 is-moved into its vertical position.

The cams 86 and 85 cooperate to move the finger 69 into locking engagement with vthe member 10 immediately after the carriage has passed the un- I loading station. This locking is so timed as to clamp the new load of shingles, which have been inserted in the carriage 40, between the fingers 12 and base 14.

The shingles |00, as they advance in horizontal,

the fingers 12 and the base 14. The pipe 9| is preferably connected with a source of steam supply, not shown, so that the portion of the shingle y I ncath which are positioned a plurality of gas in contact with the pipe will not be cooled, as be the case were the pipe support not heated.

The carriage 40,. having been loaded withv edgewise relation through an oven |00. The oven is provided with a iire brick cover |09, be-

burners |0. 'Ihe width of the oven |00 and the speed of the conveyor 20 are such that preferably three seconds are required for the passage of a shingle therethrough. 'Ihe shingle is thereby dried and its pores opened in preparation for a priming coat of asphalt which is applied to the shingles immediately upon leaving the oven |00.

vThe asphalt is preferably 240 degrees melt point and is heated to approximately 360 degrees. VIn practice it is found desirable to heat the 'shingles before the. application oi the priming asphalt coat, as the asphalt when applied to a cold shingle does not penetrate the iibers. The priming coat of asphalt is delivered in the form of a spray througha horizontal pipe ||2 having a'plurality of small apertures in the under face thereof. A feed pipe I| I conveys the hot asphalt from a tank, not shown, to the horizontal pipe I I2. The priming coat of asphaltapp1ied at the temperature, of 360 degrees to the upper face of the heated shingle tends to form' a blistered surface on the shingles by reason of the air bubblesl coming out of the bers. A pair of Scrapers ||3 is provided just ahead of the pipe ||2 to remove all of the excess priming coat and thereby leaves the shingles impregnated with the Iasphalt and a thinlayer on the surface which provides a bond fo'r the iinal coat of asphalt. 1

y The asphalt thus removed by the scrapers I |3 falls into a sheet metal trough I|4 and. flows into a drain tank ||5. A drain pipe I|1 is provided to carry away the asphalt from the tank ||5. A` tank ||5 supplies the heated material for the final coat of asphalt. The tank IIB is connected with a source of asphalt sup.- plied by an inlet pipe ||0.^` The hot asphalt from the tank' IIS is delivered upon the upper face of the shingles |00 in the form of a ribbon spray.

'A discharge pipe |20 forms a conduit leading from the tank I I6 terminating a short distance in.

front of the Scrapers II3. The end of. the pipe |20 extends transversely of the machine so that themachine is parallel with the advancing shingles. A steam .jacketv |2| surrounds the end of the -pipe |20, as best shown in Figs. 16 and 17.

A steam pipe |25 connects the jacket I2I with,-

a-steam supply. The steam jacket |2| lis provided in order to keepthe asphalt at the desired temperature, as it is discharged upon the upper face of the advancing shingles in the form of a ribbon upon the shingles passing underneath. An elongated outlet memberI |22, having spaced apart walls,vfo rms an opening |23.

' charge of the hot asphalt through the opening |23 is controlled by an adjustable closure member |24.

A scraper |23 isprovided to spread the coat of asphalt evenly'over the butt-ends and shingles underneath a hopper |21, iromvwhich finelymdivlded particles "of slate are discharged onto the shingles. An elevator |20 is provided to convey the slate from assume of supply l -a down spout |20 which discharges into the hopper |21. The elevator |28 is shown diagrameY maticallyand is preferably of the bucket type, although any other suitable means for keeping a supply of slate in the hopper maybe utilized. The slate is discharged from the hopper |21, through an opening' |33, by the rotation of iiuted drum |30. The drum |30 is rotated by a shaft I3| through a pulley |42 and a belt |4I having a connection with a source of power not shown.v

` The side |32 of the hopper |21 is foreshortene'd at the bottom in order to provide an opening |33 between the side and the drum |30. The size of the opening |33 is varied by means of adjustable closure members |32a and I32b, in order to regulate the amount of slate discharged upon the upper surface of the shingles. A plurality of rods |40, equipped with thumb nuts |39 provide means for adjusting the closure members |32a and |32b. For the ordinary length of shingle, as shown in Fig. 14, the member |32b may be kept entirely closed. In the event longer shingles or other articles are being treated, the member |32b may also be opened in order that the upper surface of the article may have a sprinkling of slate particles deposited thereon throughout its entire length. `A supplementary hopper |35 is connected with the down spout |29,by a spout |34. Some of the slate particles traveling down the spout |29 enter the hopper through the spout |34 and are discharged onto a table or platform |30 through a small discharge spout |36. A nozzle |31 on the end of the pipe |36 discharges onto/ the top of the table |30'.

The pipe support 9| terminates a short distancev beyond the slate sprinkling station at the vpoint where the advancing shingles and the carriages 40 drop from a horizontal to vertical position. The end of the pipe 9| curves downwardlyopposite the twisted portion of the T rail 55, the

curved portion of the pipe being provided with a pluralityof step like projections 92 with which the butt ends of the descending shingles contact in turn as they advance. As the shingles drop from one step projection 92 to the next adjacent projection, the impact serves to discharge the loose slate particles on the floor at the end of the pipe 9|.

'I'he treated face of the shingles is on the outside of the carriage 40 when suspendedin vertical position from the T rail 56.'

'I'he inner faces of the advancing shingles are either coated with asphalt, heated to substantially the same temperature as the priming and the ilnal coat of asphalt applied to the upper surface and to the butt end of the shingles, or they l may be coated with an emulsifled asphalt composition applied at normal temperature.` The carriage `40 then moves the shingles in vertical position around the idler sprocket wheel 22 and back towards the unloading station. Before the shingles reach the unloading platform their inner faces -are surfaced with mica.

As theA carriages 40 approach the unloading station, they are again rotated into horizontal position by the twisted T rail 53. v 'Iheshingles |00carriedbythecarriage 40 are i--fi brought into contact with a lguide rail |01 which extends the full length of the unloading station. The end of the guide rail lili 'curves downwardly so that the advancing vertical shingles rst contact with the outer edge of th'e -curved portion of the rail I I T'he curvature and position of the rail |0| is such as to assist i'n supporting the advancing shingles as they rotate from vertical into 12 are released from the shingles, thereby permitting an operative stationed at the unloading station to remove the shingles. The operative feeds the treated shingles through a set of pressure rollers |41, from which the shingles are discharged onto a platform |48. The rollers |41 are actuated by a motor |45 through' the medium of a belt drive |46, shown diagrammatically in Fig. l. 'I'he rollers |41 firmly imbed the slate particles in the coating of asphalt onthe upper surface and butt ends of the shingles and imbed the mica in the emulsifled coating composition on the .under surface of the shingles. This rolling operation provides the shingles with a non-adhesive surface. Operators, positioned one on either side of the platform |48'remove the shingles from the platform and place them on adjoining tables |49 and |50 in piles suitable for baling. By the use of 240 degrees melt point asphalt and the subsequent treatment of the surface with the powdered slate and mica followed by the rolling process, the surfaces of the shingles are sufficiently non-adhesive as to enable the shingles to be immediately putup in bales without the shingles sticking together. The processes for weather-proofing shingles heretofore adopted have been objectionable for the reason that the shingles, must be placed in a drying rack after the treatment, because if immediateiy baled they will stick together. Thus it will be seen that I have provided an improved method for weatherproong shingles and an improved machine for practicing such method, whereby the capacity production of shinglesper man has been greatly increased and the shingles thus treated are in a condition to be immediately baled without anyobjectionable adhesion.

Having thus described my invention, it is obvious'that various immaterial modifications may bie made in the same without departing from the spirit of my invention: hence, I do not wish to be understood as limiting myself to the exact f dform, construction, arrangement vand combination of parts herein described and shown, or usesmentioned.

What I claim as newand desire to secure by Letters Patent is;

uid to the other face of said shingles while the shingles are in the vertical plane. horizontal position. When the `carriages reach their horizontal position, the clamping nngers 2. The method oi treating shingles which includes conveying said shingles ilatwise in a substantially horizontal plane and applying a treating liquid to the upper face and butt end only,4

of said shingles, then `rotating said `advancing shingles into a vertical plane and applying a treating liquid to the under face of said shingles while the shingles are in the vertical plane.

3. The method of treating shingles which includes heating and conveying said shingles flatwise in a substantially horizontal plane and applying a treating liquid to the upfperface and to the butt end of said shingles, then rotating said advancing shingles into a vertical plane and applying a treating liquid to the under face of said shingles while the shingles are in the vertical plane.

4. The method vof treating shingles which inf cludes conveying said shingles atwise in a substantially horizontal plane, heating the advancing shingles, then applying a treating liquid and powdered slate to one i'ace and the butt end of said shingles, then rotating the moving shingles into a vertical plane, and applying a vtreating liquid and mica to the other face of the shin-.

. gles while the shingles are in the vertical plane.

5. 'I'he method of treating shingles which includes conveying said shingles ilatwise in a substantially horizontal plane, heating the advanc- "ing shingles, then applying a treating liquid and powdered slate to the upper face and to the butt end of said shingles, while moving in said horizontal position, then rotating the moving shingles into a vertical plane, and applying a treating liquid and mica to the other face of the shingles while the shingles are in the vertical plane.

6. -The method of treating shingles which includes heating the shingles, and conveying the shingles flatwise in a substantially horizontal plane beneath a spray of treating liquid, then 

